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    The Largest CRE Database in the US with Over 1 Million Listings
    Property profile & analytics

    358 Main St Port Washington, NY 11050-2738

    • Office buildings
    • 1,248 SF
    • 0.12 lot acres
    OFF-MARKET
    Value Estimations
    Cap Rate Potential
    Location Intelligence
    Property ID
    US63-0243353
    The Realmo ID is a unique identifier assigned to every property, incorporating country codes and precise geo-coordinates for 300x300-foot land blocks. It enables standardized data collection and seamless integration of disparate sources such as ownership, tax, title data and physical specifications. By aggregating current and historical records, the Realmo ID powers advanced analytics and delivers deep, verifiable insights for real estate professionals.

    Current Use by Public Records

    • Office buildings

    Property Details for 358 Main St

    Year built
    2006
    Construction
    FRAME
    Lot size
    0.12 lot acres
    Property size
    1,248 SF
    Property type
    Office buildings
    APN
    05-034-00-0003
    APU
    5034000003

    Value Estimations

    based on Realmo’s proprietary methodology

    • AI approach

    • CAP approach

    • Comparable approach

    • Alternative Use

    Get a detailed, property-specific valuation — fast and free

    Location Insight

    • Map
    • Local Demand
    City
    Port Washington
    County
    Nassau
    State
    New York
    Longitude
    -73.7016
    Latitude
    40.8317
    CBSA code
    35620
    CBSA name
    NEW YORK-NORTHERN NEW JERSEY-LONG ISLAND, NY-NJ-PA METROPOLITAN STATISTICAL AREA

    Property Tax & Assessments

    Tax date
    Tax Amount
    Assessed Land Value
    Assessed Improvement Value
    Total Assessed Value
    Applied Tax Rate
    Land Market Value
    Improvement Market Value
    Total Market Value
    2023
    $28,594
    $1,683
    $1,936
    $3,619
    -
    $0.00
    $0.00
    $361,900

    Comparable in this City

    • Value Estimation by Request
      224 SF

      215 Main St

      OFFICE BUILDING • 224 SF
      215 Main St, Port Washington, NY 11050-3211
      View Details
    • Value Estimation by Request
      1,764 SF

      185 Main St

      PROFESSIONAL BUILDING (MULTI-STORY) • 1,764 SF
      185 Main St, Port Washington, NY 11050-3211
      View Details
    • Value Estimation
      $555,000
      1,785 SF

      31-33 Main St

      OFFICE BUILDING • 1,785 SF
      31-33 Main St, Port Washington, NY 11050
      View Details
    • Value Estimation
      $1,095,000
      5,198 SF

      57 Manorhaven Blvd, Unit 63

      OFFICE BUILDING • 5,198 SF
      57 Manorhaven Blvd, Port Washington, NY 11050-1627
      View Details
    • Value Estimation
      $825,000
      2,352 SF

      10 Maple St

      OFFICE BUILDING • 2,352 SF
      10 Maple St, Port Washington, NY 11050-2905
      View Details
    • Value Estimation
      $850,000
      3,983 SF

      18 Secatoag Ave

      OFFICE BUILDING • 3,983 SF
      18 Secatoag Ave, Port Washington, NY 11050-2107
      View Details

    Similar Nearby for Sale

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      Converted Mixed-Use Office Space

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      Legal Two-Family Home For Sale

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      Main Street Apartment with Terrace

      Two-bedroom apartment with private terrace, convenient location.
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    • New
      $2,450,000
      5,000 SF

      New Colonial Multifamily in Port Washington

      New construction duplex with beach access in Port Washington, NY.
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      New construction colonial duplex with rental potential in Port Washington.
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    Similar Nearby for Lease

    • Contact for pricing
      1,900 SF

      Standalone Office Building with Parking

      Two-story office building with dedicated parking and existing furniture.
      104 Harbor Rd, Port Washington, NY 11050
      View Details
    • Contact for pricing
      32,550 SF

      Prime Port Washington Office Space

      Spacious Offices, Excellent Location, Nassau County
      2 Seaview Blvd, Port Washington, NY 11050
      View Details
    • Contact for pricing
      7,485 SF

      Furnished Office Space Available

      Fully furnished office space with modern amenities for rent.
      900 W Shore Rd, Port Washington, NY 11050
      View Details
    • $3,000 /Mo

      Versatile Office/Retail Space Available

      Mint condition office/retail space near Port Washington LIRR Station.
      30 Main St, Port Washington, NY 11050
      View Details
    • $725 /Mo

      Prime Office Space on Main

      Bright office space in the heart of Main Street.
      79 Main St, Port Washington, NY 11050
      View Details
    • $775 /Mo

      Professional Office on Main Street

      Conveniently located office space near transportation, shops, and restaurants.
      150 Main St, Port Washington, NY 11050
      View Details
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    358 Main St
    Port Washington, NY 11050-2738
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    Realmo Value Estimations

    Realmo estimates a property’s market value using a proprietary methodology that incorporates public data and user-submitted information. This cumulative value is generated by integrating a variety of conventional and innovative methods. 

    Disclaimer

    These figures are not official appraisals and should not be used as a substitute for a valuation performed by a licensed appraiser.
    Actual market value may differ due to factors not captured in the data. Estimates are offered for informational purposes only, and users should conduct independent research before making financial or investment decisions.
    By using this feature, you acknowledge that Realmo is not responsible for actions taken based on these estimates.

    AI approach

    Realmo AI Method estimates property value using machine learning models trained on millions of comparable listings, transactions, and market signals. It analyzes property features, location intelligence data, and current market dynamics to predict the most probable market value in real time.

    Realmo CapRate Calculation

    Realmo calculates the Capitalization Rate (Cap Rate) to help estimate a property's potential return on investment. The Cap Rate is a fundamental metric in commercial real estate that measures the relationship between a property's net operating income and its market value.

    How We Calculate Cap Rate

    Cap Rate Formula:
    Cap Rate (%) = (Net Operating Income / Property Value) × 100

    Net Operating Income (NOI) Formula:
    NOI = Area × Lease Rate × (1 - Vacancy Rate) × (1 - Operating Expense Ratio)

    Components

    Net Operating Income (NOI) represents the annual income a property generates after operating expenses:

    • Area: Building square footage from property records
    • Lease Rate: Annual $/sqft based on market data for the property type and geographic location
    • Vacancy Rate: Percentage of unoccupied space based on market data for the property type and location
    • Operating Expense Ratio: Operating costs as a percentage of income, varies by property type

    Property Value is derived from:

    • Recent sale price (if available)
    • Statistical models using comparable sales
    • AI-powered valuation estimates

    Example Calculation

    For a 100,000 sqft Office Building:

    • Lease Rate: $25.00/sqft/year (market data for Office in this area)
    • Vacancy Rate: 8% (market data for Office in this area)
    • Operating Expense Ratio: 35% (typical for Office properties)
    • Property Value: $15,000,000

    Step 1: Calculate NOI

    NOI = 100,000 × $25.00 × (1 - 0.08) × (1 - 0.35)
    NOI = 100,000 × $25.00 × 0.92 × 0.65
    NOI = $1,495,000/year

    Step 2: Calculate Cap Rate

    Cap Rate = ($1,495,000 / $15,000,000) × 100
    Cap Rate = 9.97%

    Property Type Considerations

    Net Operating Income calculations vary by property type due to different operating expense ratios:

    • Office: Higher expenses (30-40%) for HVAC, utilities, maintenance
    • Retail: Moderate expenses (25-35%) for common area maintenance
    • Industrial/Warehouse: Lower expenses (15-25%) for minimal tenant services
    • Multifamily: Moderate expenses (35-45%) including property management
    • Self-Storage: Lower expenses (25-35%) due to minimal maintenance

    Market lease rates and vacancy rates are specific to each property type and geographic location, reflecting local market conditions.

    Disclaimer

    These calculations are estimates for informational purposes only and should not be used as a substitute for professional financial analysis or appraisal.

    • Cap Rate calculations depend on market data that may change over time
    • Actual operating expenses, lease rates, and vacancy rates may differ from market averages
    • Individual property conditions, lease terms, and tenant quality significantly impact actual NOI
    • Property value estimates are approximations and not official appraisals
    • Cap rates vary widely by market, property condition, and investment risk profile

    Professional Guidance Recommended: Before making any investment or financial decisions, consult with licensed appraisers, commercial real estate brokers, and financial advisors who can evaluate your specific property and circumstances.
    By using this feature, you acknowledge that Realmo is not responsible for investment decisions or actions taken based on these estimates.

    Cap approach

    Capitalization Method calculates value based on estimated net operating income (NOI) and applying a market-based capitalization rate (cap rate), we estimate what a typical investor might be willing to pay for it.

    Comparable approach

    Comparable estimate is based on recent sales of similar nearby properties, adjusted for factors like size, condition, and location.

    Relative

    Relative property class coefficient uses factors that account for typical price differences between various asset types (e.g., retail vs. industrial) to provide a more accurate market-aligned estimate.

    Geo

    Comparable Sales Method, enhanced by Geo coefficients — location-based adjustment factors that reflect differences in price levels across neighborhoods, cities, or regions ensuring a more accurate, market-sensitive valuation.

    Stat Estimate

    This method estimates value based on actual market adjusted recent (~5 years) sales of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all similar sales ($/sqft) are above this value
    • Range-to: 75% of all similar sales ($/sqft) are below this value
    AI Estimate

    This method estimates value based on AI market estimation of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all estimations ($/sqft) are above this value
    • Range-to: 75% of all estimations ($/sqft) are below this value
    Alternative use

    Estimate considers the property’s potential value if used for a different purpose-based on zoning, demand, and market feasibility.

    More about this property
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